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BUG: KCSAN: data-race in __ext4_handle_dirty_metadata / jbd2_journal_update_sb_log_tail

write to 0xffff888102ae7800 of 8 bytes by task 344 on cpu 1:
 jbd2_journal_update_sb_log_tail+0x176/0x1b0 fs/jbd2/journal.c:1689
 jbd2_journal_commit_transaction+0x21a/0x3430 fs/jbd2/commit.c:430
 kjournald2+0x268/0x490 fs/jbd2/journal.c:213
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30

read to 0xffff888102ae7800 of 8 bytes by task 501 on cpu 0:
 is_journal_aborted include/linux/jbd2.h:1695 [inline]
 is_handle_aborted include/linux/jbd2.h:1702 [inline]
 __ext4_handle_dirty_metadata+0x14f/0x5a0 fs/ext4/ext4_jbd2.c:350
 ext4_mb_mark_diskspace_used+0x96f/0xca0 fs/ext4/mballoc.c:3882
 ext4_mb_new_blocks+0xae3/0x1fc0 fs/ext4/mballoc.c:5604
 ext4_ext_map_blocks+0x15ed/0x1ff0 fs/ext4/extents.c:4250
 ext4_map_blocks+0x71e/0xf00 fs/ext4/inode.c:637
 ext4_getblk+0xc6/0x3e0 fs/ext4/inode.c:847
 ext4_bread+0x28/0x100 fs/ext4/inode.c:900
 ext4_append+0xd1/0x1c0 fs/ext4/namei.c:67
 ext4_init_new_dir+0x177/0x500 fs/ext4/namei.c:2893
 ext4_mkdir+0x329/0x760 fs/ext4/namei.c:2939
 vfs_mkdir+0x2c3/0x3e0 fs/namei.c:3885
 do_mkdirat+0x12e/0x2c0 fs/namei.c:3911
 __do_sys_mkdir fs/namei.c:3931 [inline]
 __se_sys_mkdir fs/namei.c:3929 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3929
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x0000000000000038 -> 0x0000000000000230

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 501 Comm: syz-executor.1 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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